Sort of has that "whining" sound as if you are going in reverse. Around 110mph+ it sounds 10x as loud as reverse, like its going to explode or maybe like a jet engine winding down lol. Only makes this noise on decel coming down from higher speeds, totally off the throttle, dont really notice it with normal highway speeds. I dont hear any kind of grinding noise, and it seems to shift fine. I have noticed sort of a shimmy or shake at the top of 3rd and 4th gears, almost as if the clutch is slipping or something. I can occasionally feel a slight vibration in the gas pedal at certain throttle % and in the clutch pedal when barely touching the clutch.

Sound like a clutch/TO bearing problem or more of a problem in the trans, bearing? Doesnt really seem to have any strange symptoms under normal driving. Sometimes Ill have some slight winding sounds between accel/decel throttle positions, but being that its an ITR its pretty loud to begin with and seemed to be rather loud for as long as Ive had the car.

Ill be pulling the trans this week for a rebuild, just wondering if there might be certain things I should look for.

Dave B, dont tell me to check my tires.

 

my friend had a turbo R, it started making those noise's (but at around 90mph). The noise would get louder and louder after he kept driving it, untill one day it just wouldnt go anymore. It ended up being his LSD it took a dump, no idea why. But it happened twice to him

my TO bearing is out in my daily, but the clutch is still good, it doesnt make a noise like the one you say. But it does make a squeaky noise when pressing the clutch down.

 

ahhhh LSD, good call!!! could that cause sort of a shimmy/shaking feel if its not working properly? I will have to test it again, but when I noticed that shakey feel, it was right when my tires began to lose traction in boost in 3rd gear. I would assume this is an area when you would start to feel a problem in the LSD. Or would you mainly feel LSD problems during turns?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2R &raquo;</TD></TR><TR><TD CLASS="quote">ahhhh LSD, good call!!! could that cause sort of a shimmy/shaking feel if its not working properly? I will have to test it again, but when I noticed that shakey feel, it was right when my tires began to lose traction in boost in 3rd gear. I would assume this is an area when you would start to feel a problem in the LSD. Or would you mainly feel LSD problems during turns?</TD></TR></TABLE>

im my friend on here GSR-T-
he can tell you all the problems he had, it was his turbo R that took a dump
the shakey feel is probably the lsd going out, you wouldnt feel it just around turns.

 

I dont feel anything around turns. Everything under normal driving seems fine. Maybe the torque and wheelspin at WOT is starting to take its toll on the LSD though. If the LSD is on its way out, I doubt its gonna make that whining noise. Ill see what your friend has to say about the LSD.

That shakey feel only occurs on hard acceleration when the tires start to lose traction. The whining only occurs on decel.

I think I might have 2 separate issues occuring.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2R &raquo;</TD></TR><TR><TD CLASS="quote">

That shakey feel only occurs on hard acceleration when the tires start to lose traction. </TD></TR></TABLE>

this almost sounds like an axle problem,thats what mine would do when the inner joint started to go out.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2R &raquo;</TD></TR><TR><TD CLASS="quote"> The whining only occurs on decel. </TD></TR></TABLE>

does it whine when the clutch is pressed in on deceleration? id drain the fluid and check for metal flake. but if you gonna rebuild soon like you said you'll probably find out what it is.

i ran my stock ITR tranny with 385hp for only a year with no issues, but you hear different stories/hp ratings on the diff failure.

are you gonna upgrade the diff when you got it apart?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DontBlink &raquo;</TD></TR><TR><TD CLASS="quote">

this almost sounds like an axle problem,thats what mine would do when the inner joint started to go out.</TD></TR></TABLE>

I did have a small leak in the boot recently, but it was the outer joint, which I fixed with silicone, but Ill check the axle again as well. Maybe I didnt repack it enough? But again it ONLY happend a couple times and only once the wheels started to lose traction. Hard acceleration with traction has no shakey feel to it.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DontBlink &raquo;</TD></TR><TR><TD CLASS="quote">
does it whine when the clutch is pressed in on deceleration? id drain the fluid and check for metal flake. but if you gonna rebuild soon like you said you'll probably find out what it is.

i ran my stock ITR tranny with 385hp for only a year with no issues, but you hear different stories/hp ratings on the diff failure.

are you gonna upgrade the diff when you got it apart?</TD></TR></TABLE>

I dont think I tested the decel with the clutch pressed in. As soon as I heard it the first time I just stepped on the brakes and slowed down real quick lol. Once it gets down to around 90mph the sound pretty much goes away. I dont plan to upgrade the diff at this time, probably just rebuild it unless something is broken. Ive heard different stories from people as well. People swear they use stock axles and diff on 700whp cars so who knows. I should find out more when I get it torn down. Just want to have a good idea what to look for.

 

Is the whining noise in decel high rpms or just high speed?

 

Once I realized there was a problem, I really didnt beat on it too much to further troubleshoot it. Id have to say it seems to be RPM related but honestly its really hard to drive my car at high RPM in lower gears and I dont want to be maxxing out the RPM in 4th and 5th gear for obvious reasons. Plus i was on the highway so I didnt want to be cruising around in 2nd and 3rd gears at 9K RPM with traffic coming up behind me.

Why do you ask, Jim? What are you thinking?

 

I'm thinking its a bearing of sort, just don't know what I'm listening too. This is what makes being an internet mechanic so hard As I sit here in my suit and tie, I would say that when you rebuild the trans the prob will go away!

What does "rebuild the trans" entail? Synchros? Bearings?.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by walker111 &raquo;</TD></TR><TR><TD CLASS="quote">I'm thinking its a bearing of sort, just don't know what I'm listening too. This is what makes being an internet mechanic so hard As I sit here in my suit and tie, I would say that when you rebuild the trans the prob will go away!

What does "rebuild the trans" entail? Synchros? Bearings?.....</TD></TR></TABLE>

I guess Im concerned it could be a problem with a gear or maybe something bent, or maybe clutch/flywheel related. I dunno.

Otherwise a rebuild will most likely be "the works", depending how much its going to cost me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2R &raquo;</TD></TR><TR><TD CLASS="quote">

I guess Im concerned it could be a problem with a gear or maybe something bent, or maybe clutch/flywheel related. I dunno.

Otherwise a rebuild will most likely be "the works", depending how much its going to cost me. </TD></TR></TABLE>

It def adds up.

I wouldnt suspect clutch/pp/flywheel. If its only happening in 5th then possibly a gear but again I would be more inclined to say a bearing.

 

what kind of clutch do you use? I had an ACT clutch tear up 2 trannies... It was the mainshaft bearing, whole shaft would slop around.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by My95SlvrBlt &raquo;</TD></TR><TR><TD CLASS="quote">what kind of clutch do you use? I had an ACT clutch tear up 2 trannies... It was the mainshaft bearing, whole shaft would slop around.</TD></TR></TABLE>

How did the clutch tear up the tranny?

 

I can only pinpoint it to an overly aggressive pressure plate. I know of a few others who had this same symptom after a while on an ACT setup.

 

I would think it would be more of a problem with a harsh disk rather than the PP itself. a harsh disk is going to shock the tranny a lot more than a disk that you can easily slip. Im just guessing though.

 

With the act I had(xtreme, hdss) It was somewhat hard to feather. It was a sort of on/off switch, and while shifts felt good, the jolt was very noticeable.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by My95SlvrBlt &raquo;</TD></TR><TR><TD CLASS="quote">With the act I had(xtreme, hdss) It was somewhat hard to feather. It was a sort of on/off switch, and while shifts felt good, the jolt was very noticeable.</TD></TR></TABLE>

thats more likely the disk "biting" hard rather than the pressure plate preventing you from slipping it. you could probably run a stock ITR pressure plate with a 4 puck unsprung disk and it would be a pain in the *** to drive.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by walker111 &raquo;</TD></TR><TR><TD CLASS="quote">
I wouldnt suspect clutch/pp/flywheel. If its only happening in 5th then possibly a gear but again I would be more inclined to say a bearing.</TD></TR></TABLE>

it's probably a bearing or a synchro.. my 1st ITR did the same thing as the synchros wore out..

 

my guess is a bearing in the tranny... based on the whining indication.....

 

RTardW I had the same noise just before I replaced my clutch. When Dan replaced the clutch and TO bearing the whining noise went.

 

I'd say dif bearings.

 

I have the same symptoms. I hear the same whining sound when decelerating. And when I disengage the clutch the whining goes away. I want to say its the clutch, but something is telling me its coming from inside the tranny. I guess its time for a rebuild and final drive.... .

 

sent you a PM. the whining I hear is ONLY when Im decelerating from a high speed. I dont really hear any whining otherwise, maybe occasionally at part throttle but the sound is very faint. Im pulling my trans today so we'll see what happens.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2R &raquo;</TD></TR><TR><TD CLASS="quote">sent you a PM. the whining I hear is ONLY when Im decelerating from a high speed. I dont really hear any whining otherwise, maybe occasionally at part throttle but the sound is very faint. Im pulling my trans today so we'll see what happens. </TD></TR></TABLE>

Will you be doing the rebuild?